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Planned Server Outage Tuesday March 19th

Milkyway@Home - St, 13.03.2019 - 23:24
Hey Everyone,

The new server is in and I am working on getting our project set up and migrated over. My current plan is to take the current server offline early on Tuesday and migrate the database to the new server. I'm not sure how long this will take since the database is quite large. Hopefully I will have everything back up and running sometime on Wednesday the 20th. Sorry for any inconvenience this will cause.

Thank you all for your continued support.

Kategórie: Novinky z projektov

New SETI Perspectives article

SETI@Home - Ut, 12.03.2019 - 23:18
Richard M Lawn has posted another interesting article to the SETI Perspectives forum. This one is about the mysteries of Fast Radio Burst (aka FRBs), possibly some of the most distant explosions ever seen.
Kategórie: Novinky z projektov

IPD's first nanoparticle vaccine

Rosetta@home - Pi, 08.03.2019 - 20:51

Researchers in the King lab, an affiliate of the Institute for Protein Design, published a report in Cell describing a computer-designed nanoparticle vaccine targeting respiratory syncytial virus (RSV). Although Rosetta@home was not directly used for this study, Rosetta@home volunteers provided computing for related research and development.

From IPD news:

Millions of children will visit hospitals this year, sickened by RSV. Infection is usually mild, causing only fevers, runny noses and frightened parents. But, in severe cases, barking coughs and painful wheezing can indicate serious respiratory complications, including bronchiolitis and pneumonia.

RSV is the primary cause of pneumonia in children under one and is therefore the leading cause of infant mortality worldwide after malaria. Although virtually every child on Earth will get RSV before the age of three, an estimated 99 percent of RSV deaths occur in developing countries. Despite substantial effort, there is not yet a safe and effective vaccine.

Today, an international team of scientists co-led by researchers at the IPD report in Cell a first-of-its-kind vaccine candidate for RSV. It elicits broadly neutralizing antibodies against respiratory syncytial virus in mice and monkeys, paving the way for human clinical trials.
Kategórie: Novinky z projektov

New Server Installation

Milkyway@Home - Št, 07.03.2019 - 18:57
Hey Everyone,

We will be receiving our new server today. This means we may experience a few planned outages over the next couple days as we get it set up and migrate our data. In addition to installing this new hardware, we will also be upgrading the server to the BOINC server version 1.0 that was recently released. As is usual during upgrades, there may be a few hiccups along the way. Please bear with us while we work to make things more stable in the long run.

Thank you all for your continued support.


Kategórie: Novinky z projektov

We're back up.

SETI@Home - Št, 07.03.2019 - 02:51
Hopefully there won't be any further problem.

Our attempt to upgrade the memory on Oscar (the BOINC database machine) and Carolyn (the replica database) took a bit of DIMM swapping to find pairs of DIMMs that worked. Carolyn is still short two DIMMs (32 GB), but we didn't want to extend the outage any further to try to get it up to the full 192 GB.

We might try to max out Carolyn during the outage next week.

[edit]And as is usual after a long outage, we've got a large number of hosts out there starving for work. It'll take a little while before "no work" messages start to get less frequent.[/edit]
Kategórie: Novinky z projektov

Year of the Pig Challenge starts March 5th 2019 18:00 UTC

PrimeGrid - Ut, 05.03.2019 - 12:22
Gong hei fat choy! Wishing you great happiness and prosperity. To celebrate the start of Chinese new year, PrimeGrid is having a 5 day challenge from March 5th 2019, 18:00 UTC until March 10th, 18:00 UTC. Work units from the GCW (LLR) project, which are downloaded and completed during the challenge will count towards your challenge score. Help us celebrate, maybe find a really big prime number eliminating one of the Generalised Cullen bases and earn a cool new badge! For more information and discussion, please see the official challenge thread:
Kategórie: Novinky z projektov

Server Downtime Over the Weekend

Milkyway@Home - Pi, 01.03.2019 - 21:46
Hey Everyone,

The building we house our server in will be doing maintenance on their power systems over the weekend. Unfortunately, that means there will be an outage from today at 4pm to Monday at 10am. I am sorry for the late notice.

We hope you all have a great weekend.

Kategórie: Novinky z projektov

Thanks for supporting SixTrack at LHC@Home and updates

LHC@home - Ut, 23.01.2018 - 19:08
Dear volunteers,

All members of the SixTrack team would like to thank each of you for supporting our project at LHC@Home. The last weeks saw a significant increase in work load, and your constant help did not pause even during the Christmas holidays, which is something that we really appreciate!

As you know, we are interested in simulating the dynamics of the beam in ultra-relativistic storage rings, like the LHC. As in other fields of physics, the dynamics is complex, and it can be decomposed into a linear and a non-linear part. The former allows the expected performance of the machine to be at reach, whereas the latter might dramatically affect the stability of the circulating beam. While the former can be analysed with the computing power of a laptop, the latter requires BOINC, and hence you! In fact, we perform very large scans of parameter spaces to see how non-linearities affect the motion of beam particles in different regions of the beam phase space and for different values of key machine parameters. Our main observable is the dynamic aperture (DA), i.e. the boundary between stable, i.e. bounded, and unstable, i.e., unbounded, motion of particles.

The studies mainly target the LHC and its upgrade in luminosity, the so-called HL-LHC. Thanks to this new accelerator, by ~2035, the LHC will be able to deliver to experiments x10 more data than what is foreseen in the first 10/15y of operation of LHC in a comparable time. We are in full swing in designing the upgraded machine, and the present operation of the LHC is a unique occasion to benchmark our models and simulation results. The deep knowledge of the DA of the LHC is essential to properly tune the working point of the HL-LHC.

If you have crunched simulations named "workspace1_hl13_collision_scan_*" (Frederik), then you have helped us in mapping the effects of unavoidable magnetic errors expected from the new hardware of the HL-LHC on dynamic aperture, and identify the best working point of the machine and correction strategies. Tasks named like "w2_hllhc10_sqz700_Qinj_chr20_w2*" (Yuri) focus the attention onto the magnets responsible for squeezing the beams before colliding them; due to their prominent role, these magnets, very few in number, have such a big impact on the non-linear dynamics that the knobs controlling the linear part of the machine can offer relevant remedial strategies.

Many recent tasks are aimed at relating the beam lifetime to the dynamic aperture. The beam lifetime is a measured quantity that tells us how long the beams are going to stay in the machine, based on the current rate of losses. A theoretical model relating beam lifetime and dynamic aperture was developed; a large simulation campaign has started, to benchmark the model against plenty of measurements taken with the LHC in the past three years. One set of studies, named "w16_ats2017_b2_qp_0_ats2017_b2_QP_0_IOCT_0" (Pascal), considers as main source of non-linearities the unavoidable multipolar errors of the magnets, whereas tasks named as "LHC_2015*" (Javier) take into account the parasitic encounters nearby the collision points, i.e. the so called "long-range beam-beam effects".

One of our users (Ewen) is carrying out two studies thanks to your help. In 2017 DA was directly measured for the first time in the LHC at top energy, and nonlinear magnets on either side of ATLAS and CMS experiments were used to vary the DA. He wants to see how well the simulated DA compares to these measurements. The second study seeks to look systematically at how the time dependence of DA in simulation depends on the strength of linear transverse coupling, and the way it is generated in the machine. In fact, some previous simulations and measurements at injection energy have indicated that linear coupling between the horizontal and vertical planes can have a large impact on how the dynamic aperture evolves over time.

In all this, your help is fundamental, since you let us carry out the simulations and studies we are interested in, running the tasks we submit to BOINC. Hence, the warmest "thank you" to you all!
Happy crunching to everyone, and stay tuned!

Alessio and Massimo, for the LHC SixTrack team.
Kategórie: Novinky z projektov

LHC@home down-time due to system updates

LHC@home - Ut, 23.01.2018 - 11:19
Tomorrow Wednesday 24/1, the LHC@home servers will be unavailable for a short period while our storage backend is taken down for a system update.

Today, Tuesday 23/1, some of the Condor servers that handle CMS, LHCb and Theory tasks will be down for a while. Regarding the on-going issues with upload of files, please refer to this thread.

Thanks for your understanding and happy crunching!
Kategórie: Novinky z projektov
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